Staiespat t office



I. G. CAPSTAFF. PHOTOGRAPHIC PRINTING APPARATUS. APPLICATION FILED NOV. 5. 1917.

1,306,946. Patented June 17, 1919.

WITNESSES:

uumin PATENT orricn.

JOHN G. OAPSTAFF, OF ROCHESTER, NEW YORK, ASSIGNOR TO EASTMAN KODAK COMPANY, OF ROCHESTER, NEW YORK, A. CORPORATION OF NEW YORK.

To all whom it may concern: p e

' Be it known that I, JOHN G- CAPSTAEF, a subject of the King of Great Britain, resid- 1 ing at Rochester, 1n the county of Monroe '5 and State of New York, have invented cer fiftain new and useful Improvements in Photo- '11 graphic-Printing Apparatus, of Which the Q; following is a full, clear, and exact specifi- --cation. 1 jIQ This invention relates to photographic printing apparatus and more particularly to y, apparatus for printing a plurality of images in predetermined relative positions. Since the present preferred embodiment of my invention is especially adapted to print two images from opposite sides onto a photo-' graphically sensitive element, '1 shall describe such application of it, by way of illustration.

The chief object of my invention is to pro vide a simple, inexpensive printing-apparatus, contairii'n'gallnecessary.adjustments for &.-easy and accuratesg ork with different thick- 'nesses and siiespfi plates or other image v bearing media. Other objects will hereinafter appear.

In theaccompanying drawing a Figure 1 'isgag'p rspective view of the pre ferred embodimehit of my invention with the.

upper plate holding member in raisedposition.

Fig. 2,is a longitudinal section showing the plate holding members in prlnting position. l

Fig. 3 is a transverse sectional view of the lower plate holding member.

Fig. 4 is a dgtailed perspective view of one of the clamping blocks.

Fig. 5 is a fragmentary sectional view illustrating one of the adjusted positions of the plates in their clamps.

The lower plate holding member 1 in my apparatus has mounted thereon an adjustable block 3 connected by hinges 9 to the other plate holding member 2, theaxes of the hinges being shown in this example as substantially parallel to the upper face of member 1. The block 3 has a large opening 41 through which passes a relatively smaller 5 screw threaded post 4 rising from plate 5 secured in a countersunk opening in the upper face of member 1 by means of screws.

or other approved attaching defices'fi. Resting on the top of block 3 and slldable over post 4 is a clamping plate/7 which is engagedv which the printing light may enter.

opposite sides thereof are well known to Specification of Letters Patent. 1 P t t d J e 17, 1919; Application filed November 5, 1917. Serial No. 200,409. l

by a wing nut 8 threaded on to post 4. Since the post 4 is considerably smaller than the opening 41, the block 3 is bodily slidable and angularly adjustable over the upper surface of member 1 when the wing nut 8 and clamping plate 7 are suitably loosened.

' e members 1 and 2 are provided with rectangular openings 10. and 11 through The transverse walls of these openings are provided with guiding grooves 12, 12, in which slide the tongues 17 of the clamping blocks 16. These clamping members 16 are provided on their rear faces with hearing members 18 against which bear the inner ends of thumb screws l9 which are operatively .engaged with threaded plates 21 attached to the outer lateral faces of members 1 and 2,

as indicated in Fig. 1. The inner edges of the blocks 17 are cut away and provided with metallic angle pieces 23, the vertical por-.' tions of which are adapted to engage one edge of a plate, as indicated in Fig. 3. Upon the opposing faces of the openings 10 and 11 I are cut away portions bearing corresponding metallic inner pieces 22 attached by any suitable devices 27.' The sides of openings 10 and 11 which are at right angles to the sides bearing metallic pieces 22 and 23, also have cutaway portions in which are fitted metallic angle pieces 25, shown most clearly in F igs'. 2 and 5. It is noted that the depths of the cut away portions and consequently the depths of the vertical members of pieces 22, 23 and 25 are generally greater than the thicknesses of the plates normally used in j my apparatus. Sensitized films and plates adapted to re ceive light-impressions or printings from the persons skilled in the art of color photogra-. phy. For making two-color positives, for instance, suitable color-selection images are printed in registry from opposite sides onto such a film or plate and, after the regular coloring manipulations, a colored picture is obtained. The images printed upon the opposite sides of the film may not be neces- H sarily adapted for registration, but may be, Y for instance, color-selection stereoscopic images, commonly referred to in the art as 'anaglyphs. Certain parts of such images should bear a definit location with respect to each other. My printing apparatus is part'ures or such anagly-phs, and by way of example, I shall describe the operation of my apparatus, when so used.

After swinging member 2 upwardly out of the way, the plate 15, with its image, bearface of member 1 and then holding plate 15 against such gage member until the rotation of screw 19 pushes clamp member 16 and pieces 23 into clamping position against the edge of plate 15. The upper face of plate 15, may also be located above the upperface of member 1, as indicated in Fig. 5.

After plate 15 is thus clamped, a piece of film 26, or-a sheet having approximately the same thickness as said film, islaid upon plate 15 and plate 14 is placed thereover,

thus bringing plates 14, 15, and film 26 into.

approximately the same fac-to-face contact, which will exist when the printing operations take place. For approximate and quite satisfactory results the film. may be omitted at this stage and plate 14 placed directly on.- plate 15. Member 2 is now swung down wardly about hinge 9 and over plate 14 to bring the vertical clamping faces of upper pieces 22 and 23 opposite the edges of plate 14. By turning the upper thumb screw 19 and therebyadvancing the upper clamping block 16, the plate 14 will be firmly gripped in the member 2 at the proper level for future printing operations. The adjustment may be such that the inner face of plate 14 is flush with the inner face of member 2, or the inner face of plate 14 may extend below the lower face of member 2, as shown in Fig.5. The

film 26 is next removed and wing nut 8 is loosened to permit block 3 to -be 'ad-- to operatively engage the intervening film or plate during the subsequent printing steps.

The operator now raises member 2 and places a sensitized film or plate of the kind hereinabove mentioned between the plates 14 and 15 and then presses members 1 and 2 together, holding them in this position either by hand or by any suitable or ordinary clamp engaging the outer ends of members land 2. This loading will, of course,

be done under conditions where the light reaching the film will be insuflicient in quantity or color to injure it. The apparatus is now placed with first one printing window and then the other printing window toward the printing light, thus printing the images successively from the plates 14 and 15 upon the opposite sides of the film 26. Obviously with suitably arranged printing lamps the light may enter both windows 10 and 11 simultaneously to make the printing operation merely a single step. a

While in the above example, I have referred to the image bearing media as plates, I do not wish to.imply that the apparatus is limited for use with ordinary photographic plates, but in the claims I have used the word plates generically to designate any suitable image-bearing element which may be fastenedin adjusted position in my apparatus.

In certain cases, particularly where a relatively small piece of film is used, the inner .face of either or both plates 14 and 15 may be sunk below the plane of the inner; faces of members 1 and 2, this being a matter of choice for the operator. It is also noted that the movable clamping members 16 permit the apparatus to accommodate lates 14 and 15, whether they fill the availa le space in openings "10 and 11 or are smaller in area justed. The operator now holds the apparatus up to a source of light and looks through alined openings 10 and 11 to view the images on plates 14 and 15. If the same are not in printing position, that is, either in registry or in the proper position for making anaglyphs, the operator shifts block '3 'either angularly or bodily or both in any direction over the face of member 1 and adjustment readily allows the two-images to be brought into the proper relative pothan such openings. Such plates are thus accommodated even when they are of different'sizes and thicknesses.

Having thus described my invention, what- I claim anddesire to secure by Letters Patsition. Thereupon, wing nut 8 is tightened.

to clamp the block 3 in its adjusted position. The plates 14 and 15 have, by the above series of operations, been properly positioned so as to correctly locate their images and to correctly locate their contact surfaces ent of the Uni-ted States, is: j

1. In photographic printlng apparatus, a set of plate-holding members arranged to move into and out of printing position, and adevice for adjustably predetermining the relative location of said members when in said printing position.

set ofmembers, each provided with plateholding means, said members being movably connected to bring said plates into and out of printing position, and means for selec- 2. Inphotographic prmting apparatus, a v

tiv'ely determining the positional relation which said plates bear with respect to each other when in said printing position.

3. In photographic printing apparatus, a pair of members, each provided with a plateholding device, and connections between said members including a pivot and means for adjusting said pivot.

a. In photographic printing apparatus, a pair of plate-holding members, and connec tions between them including a hinge connected with one of said members with its axis substantially parallel with the other member, and means for adjusting the position of the hinge with relation to said other member.

In photographic printing apparatus, a pair of plate-holding members, a block movably carrying one of said members and adjustable bot-h angularly and slidably on the other member, and means for retaining said block in adjusted position.

6. In photographic printing apparatus, a

plateholding member having a post thereon, a block on said member having an opening receiving said post but of greater size than the post to permit the block to turn angularly on the member and to slide bodily in any direction on said member, a clamping nut on said post, a clamping plate resting on the block and engaged by the nut, and a second plate-holding member, the operative position of which is controlled by said block.

7. In photographic printing apparatus, a plate-holding member, a device adjustably mounted to move thereon and approximately parallel therewith, and a second plate-holding member the operative position of which, relative to the first named member is controlled by said device.

8. In photographic apparatus for printing from opposite sides onto a sensitive element, a plate-holding member and a second plate-holding member, between which and the first named member the element is adapted to be located during printing, said second member being mounted on the first named member to move toward and away from the upper face of the first named memily in any direction parallel to said face.

9. In photographic printing apparatus, a member having plate-holding means thereon, a second plate-holding member having means for holding a plate in predetermined position by adjustably engaging edges thereof, and pivotally and slidably adjustable connections between said members.

10. In photographic apparatus for print ing from opposite sides onto a sensitive element, a pair of members connected to move into and out of printing position with said element between them, said members having plate clamps adjustable thereon, the opposing faces of which adjustably engage the edges of plates, said faces of the clamps being of greater depth than the thickness of a normal plate, and means for adjustably determining the relative locations which saidmembers occupy when in printing POSllZlOIl.

11. In photographic printing apparatus, a pair of members, each having means for adj ustably holding plates of different sizes and thicknesses, and a device for adj ustabl predetermining the relative location oi said plates for printing.

In testimony whereof, I have signed this specification in the presence of two witnesses this 1st day of Nov., 1917.

, JOHN G. CAPSTAFF.

Witnesses:

C. E. MARTIN, FRED H. GARNER.

ber and being adjustable angularly and bod- 

